Articles Vol. 67 No. CĐ4-HN Ký sinh trùng-HN Hóa sinh 2026 14/04/2026

EVALUATION OF INSECTICIDE SUSCEPTIBILITY AND ULV SPRAY EFFICACY ON AEDES IN SOUTHERN OF VIETNAM IN 2024

Giang Han Minh1,2, Doan Binh Minh1,2, Pham Nguyen Thuy Vy1,2, Mai Dinh Thang1,2, Le Tan Kiet1,2, Pham Thi Nhung1,2, Do Quoc Hoa1,2, Nguyen Huu Phuc1,2, Phan Van Y1,2, Phan Vo Quynh Nhu1,2, Ngo Hang Thuy Truc1,2, Nguyen Hoang Minh Anh1,2, Nguyen Que Anh1,2, Le Hong Tay1,2, Cao Thi Huong1,2, Nguyen Tuan Dung1,2, Nguyen Thi Hong Nhung1,2, Nguyen Thi Ngoc Yen3,4, Tran Do Thanh Phong5,6, Ha Thi Thuy Duong5,6, Trinh Thi Thanh Tuyen5,6, Trinh Thi Thanh Tuyen5,6, Lu Duc Thanh5,6, Nguyen Ngoc Trang7,8
1 Institute of Malaria, Parasitology and Entomology, Ho Chi Minh City
2 Viện Sốt rét – Ký sinh trùng – Côn trùng TP. HCM
3 Faculty of Pharmacy, Nguyen Tat Thanh University
4 Khoa Dược, Trường Đại học Nguyễn Tất Thành
5 Vo Truong Toan University
6 Trường Đại học Võ Trường Toản
7 Tien Giang General Hospital
8 Bệnh viện đa khoa Tiền Giang
DOI: 10.52163/yhc.v67iCD4.4795
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Keywords
Aedes aegypti, Aedes albopictus, Deltamethrin, Alphacypermethrin, Permethrin, Malathion
Abstract

Objective: To determine the insecticide susceptibility and ULV spray efficacy of insecticides against Ae. aegypti and Ae. albopictus mosquitoes at several sites in the Southern region of Vietnam.

Research method: Controlled experiment

Results: Ae. aegypti mosquitoes showed 2/4 sites resistance and 2/4 sites increased tolerance to Deltamethrin 0.05%; 4/5 sites resistance and 1/5 sites sensitivity to Alphacypermethrin 0.08%; 3/3 sites resistance to Permethrin 0.75%; and 2/2 sites sensitivity to Malathion 5%. Ae. albopictus mosquitoes showed 2/2 sites resistance to Deltamethrin 0.05%; 1/1 sites sensitivity to Alphacypermethrin 0.08%; and 1/1 sites resistance to Permethrin 0.75%. ULV spray efficacy of insecticides against Ae. aegypti mosquitoes was 6/7 sites, 1/7 sites not; against Ae. aegypti mosquitoes, 2/2 sites were achieved.

Conclusion: Aedes aegypti and Aedes albopictus (F1) mosquitoes hatched from larvae collected at the study sites were resistant to Deltamethrin 0.05%, Alphacypermethrin 0.08%, Permethrin 0.75%, but remained sensitive to Malathion 5%; the chemicals used in the dengue fever control program in the provinces still have good efficacy.

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